IWM vs XSD: Holdings Overlap
iShares · 1941 holdings · $82.2B · as of 2026-03-31
XSDState Street® SPDR® S&P® Semiconductor ETF
State Street (SPDR) · 46 holdings · $2.9B · as of 2026-08-06
Holdings snapshots are 128 days apart (IWM: 2026-03-31, XSD: 2026-08-06). Weights and index membership change between snapshots, so the true current overlap is typically higher than shown. For funds tracking the same index, the gap can be 5–15 points.
How similar are IWM and XSD?
iShares Russell 2000 ETF (IWM, by iShares) holds 1941 positions; State Street® SPDR® S&P® Semiconductor ETF (XSD, by State Street (SPDR)) holds 46. They have 21 holdings in common, and by portfolio weight the two funds are 2.5% identical. In practical terms the pair is essentially distinct, holding almost none of the same securities.
- Overlap by Weight
- 2.5%Sum of the smaller weight of each shared holding
- Shared Holdings
- 21IWM holds 1941 · XSD holds 46
- Weight in Shared Holdings
- IWM 2%·XSD 43%Share of each fund's weight in stocks both funds own
Based on each fund's latest official holdings. How is this calculated?
What makes each fund different
Only in IWM
1920 of 1941 positions (97.2% of the fund) are not held by XSD. Showing the top 30 by weight.
Sector Breakdown
| Sector | IWM | XSD |
|---|---|---|
| Information Technology | 13.6% | 95.2% |
| Industrials | 17.9% | 1.8% |
| Health Care | 16.6% | 0.0% |
| Financials | 15.3% | 0.0% |
| Consumer Discretionary | 8.0% | 0.0% |
| Other Sectors | 22.7% | 0.0% |
| Unclassified | 5.5% | 2.9% |
Share of each fund's portfolio weight by GICS-style sector, compiled from issuer fund data and our own classification of the holdings, not the issuers' published sector charts. “Unclassified” is weight we could not classify (5% of IWM, 3% of XSD).
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| IWM | +1.8% | +23.0% | +38.6% | +17.1% | +7.5% | +10.8% | 0.88% |
| XSD | +1.8% | +69.5% | +104.0% | +35.6% | +22.7% | +27.6% | 0.14% |
Total returns including dividends, from adjusted daily closes as of 2026-08-07. 3Y/5Y/10Y are annualized. Yield is trailing-12-month distributions over the last close. Past performance does not predict future results.
Project the growth of $10,000 in IWM vs XSD →
Shared Holdings(21)
The top 10 shared positions account for 86% of the overlap, led by CRDO, RMBS and SITM.
 CRDOCredo Technology Group Holding Ltd ORDINARY SHARES | 0.52% | 2.49% | 0.52% |
|---|---|---|---|
 RMBSRambus Inc. COM | 0.32% | 1.82% | 0.32% |
 SITMSitime Corporation COM | 0.26% | 2.66% | 0.26% |
 SMTCSemtech Corporation COM | 0.24% | 2.24% | 0.24% |
 SLABSilicon Laboratories, Inc. COM | 0.23% | 2.57% | 0.23% |
 RGTIRigetti Computing Inc COMMON STOCK | 0.16% | 2.18% | 0.16% |
 DIODDiodes Incorporated COM | 0.11% | 2.52% | 0.11% |
 PIImpinj Inc COM | 0.10% | 3.60% | 0.10% |
 POWIPower Integrations Inc. COM | 0.10% | 2.03% | 0.10% |
 SYNASynaptics Incorporated COM | 0.09% | 2.03% | 0.09% |
 AMBAAmbarella Inc COM USD0.00045 | 0.07% | 3.44% | 0.07% |
 NVTSNavitas Semiconductor Corporation COM | 0.06% | 1.55% | 0.06% |
 MXLMaxlinear Inc COM | 0.05% | 2.50% | 0.05% |
 PENGPenguin Solutions Inc COM | 0.03% | 2.47% | 0.03% |
 TET1 Energy Inc. COM NEW | 0.03% | 1.84% | 0.03% |
 INDIIndie Semiconductor Inc. CLASS A COM | 0.02% | 1.48% | 0.02% |
 AOSLAlpha & Omega Semiconductor Ltd. COM USD0.002 | 0.02% | 1.61% | 0.02% |
 CEVACeva Inc COM | 0.02% | 0.88% | 0.02% |
 AMBQAmbiq Micro Inc. COMMON STOCK | 0.02% | 0.81% | 0.02% |
 KOPNKopin Corp. COM | 0.01% | 1.28% | 0.01% |
 NVECNVE Corp. COM NEW | 0.01% | 0.60% | 0.01% |
Frequently Asked Questions
How much do IWM and XSD overlap?
IWM and XSD overlap by 2.5% of portfolio weight. They share 21 holdings (IWM holds 1941 positions and XSD holds 46), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IWM and XSD?
The two portfolios are 2.5% identical by weight. Owning both is genuine diversification: the funds hold almost none of the same securities.
What are the biggest shared holdings of IWM and XSD?
The largest positions held by both funds are CRDO, RMBS, SITM, SMTC and SLAB. Together the top 10 shared positions account for 86% of the total overlap.
What does IWM own that XSD doesn't?
1920 positions (97.2% of IWM) are unique to IWM, led by BE, CDE and FN. In the other direction, 25 positions (57.4% of XSD) are unique to XSD.